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Type: Journal article
Title: Bethe-Salpeter equation for doubly heavy baryons in the covariant instantaneous approximation
Author: Weng, M.
Guo, X.
Thomas, A.
Citation: Physical Review. D. Particles, Fields, Gravitation and Cosmology, 2011; 83(5):056006-1-056006-15
Publisher: American Physical Soc
Issue Date: 2011
ISSN: 1550-7998
Statement of
M.-H. Weng, X.-H. Guo, and A.W. Thomas
Abstract: In the heavy quark limit, a doubly heavy baryon is regarded as composed of a heavy diquark and a light quark. We establish the Bethe-Salpeter equations for the heavy diquarks and the doubly heavy baryons, respectively, to leading order in a 1/mQ expansion. The Bethe-Salpeter equations are solved numerically under the covariant instantaneous approximation with the kernels containing scalar confinement and one-gluon-exchange terms. The masses for the heavy diquarks and the doubly heavy baryons are obtained, and the nonleptonic decay widths for the doubly heavy baryons emitting a pseudoscalar meson are calculated within the model.
Rights: ©2011 American Physical Society
RMID: 0020104356
DOI: 10.1103/PhysRevD.83.056006
Appears in Collections:Physics publications

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